Summers Winery has announced it will release a limited-production Bordeaux-style blend this November, aptly named Checkmate (a portion of the winery's grapes are grown in Knight's Valley, and this blend is bound to be a "grandmaster" of wine). Just 75 cases were produced of this blend of Cab Sauv, Merlot, Cab Franc and Petit Verdot, all grown in northern Napa. This particular wine has been in the wings for quite some time. All grapes were harvested and sorted by hand in 2005, and a mere three barrels from the 600 produced will wear the Checkmate label.